side piece
In real, traceable use. Part of the curated seed collection; community review is coming.
Meaning · English
A person with whom someone already in a relationship carries on a physical affair (not emotional affair) without having the intention of forming a serious relationship. Not gender specific.
Register: slang
Where it’s used:
Used
American English
Examples
Near-synonyms: (feminine) mistress, side chick, side bitch (vulgar)
Usage example from English Wiktionary (CC BY-SA 4.0, retrieved 2026-07-30)
Sources & notes
Adapted from English Wiktionary (CC BY-SA 4.0, retrieved 2026-07-30 via kaikki.org).
Common questions
What does “side piece” mean?
A person with whom someone already in a relationship carries on a physical affair (not emotional affair) without having the intention of forming a serious relationship. Not gender specific.
Is “side piece” formal or informal?
side piece is generally slang.